FilterLab opens on the Filter Design Aid tab, which walks through the basic options for designing a filter.
The Circuit Schematic tab shows the schematic of the filter.
The Filter Response tab shows the gain and phase response of the filter, but can also include other analyses like group delay, input impedance, and step response.
Further customization can be implemented in the Modify Current Filter tab.
Under the Modify Current Filter tab, click on the Calculate button to implement your changes and see the filter response and circuit schematic.
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